/* Copyright */
/*******************************************************************************
 * The MIT License (MIT)
 *
 * Copyright (c) 2014 Tsunagi-BPM
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *******************************************************************************/
 /* Copyright End */
 
package tsunagi.json.path;

import java.util.NoSuchElementException;

public class Tokenizer {
	public static final String DELIM = "/";
	public static final String DELIM_ARRAY_COND_START = "[";
	public static final String DELIM_ARRAY_COND_END = "]";
	protected static final char CHAR_DELIM = '/';
	protected static final char CHAR_CANCEL = '\'';
	
	private String path;
	private StringTokenizer st;
	
	public Tokenizer(String path) {
		this.setPath(path);
		this.init();
	}
	
	public Tokenizer(String path, String delim) {
		this.setPath(path);
		this.init(delim);
	}

	public void init() {
		this.setStringTokenizer(new StringTokenizer(this.getPath(), CHAR_DELIM, CHAR_CANCEL));
	}
	
	public void init(String delim) {
		char c = delim.charAt(0);
		this.setStringTokenizer(new StringTokenizer(this.getPath(), c, CHAR_CANCEL));
	}

	public String getPath() {
		return path;
	}


	public void setPath(String path) {
		this.path = path;
	}

	
	private StringTokenizer getStringTokenizer() {
		return st;
	}

	protected void setStringTokenizer(StringTokenizer st) {
		this.st = st;
	}

	public String next() {
		String result = null;
		try {
			result = this.getStringTokenizer().next();
		} catch (NoSuchElementException e) {
			// do nothing
		}
		return result;
	}
	
	public boolean arrayConditionExists(String token) {
		int i1 = token.indexOf(DELIM_ARRAY_COND_START);
		int i2 = token.indexOf(DELIM_ARRAY_COND_END);
		return (i1 > -1) && (i2 > -1) ? true: false;
	}
}
